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A nationwide two-minute silence will begin at noon today. Announcements will be made on all Underground trains and platforms reminding people when it is about to start.

There will also be an evening ceremony at Regent's Park for the more than 1,000 family members and known survivors of the bombings at which the names of all 52 people killed by the suicide bombers will be read out.

Plaques commemorating the victims of 7 July will be placed at each of the bomb sites at five locations - King's Cross, Russell Square, Edgware Road, Aldgate and Tavistock Square.

Families of victimes and survivors will attend a private ceremony at the Museum of London to lay a book of tributes before a service at St Ethelburga’s Church.

Meanwhile the Met have said they have intensified their terrorism investigations and the likelihood of another attack is high.